Industry

YC B2B Companies

2,174 Y Combinator b2b startups with verified founder contacts, batch info, and company data.

2,174

Companies

838

Active

Acquired

Public

YC Company Directory

50 companies

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Company	Batch	Description	Status	Location	Team	Founders	Reveal
10x Science	W26	The AI-native platform for next-generation protein characterization.	Active	San Francisco, CA, USA	3	David Roberts, Andrew Reiter, Vishnu Tejus	Reveal
1code (21st.dev)	W26	Orchestration layer for coding agents	Active	San Francisco, CA, USA	3	Serafim Korablev, Sergey Bunas	Reveal
Arcline	W26	Startup legal work handled by elite lawyers & same-day turnaround	Active	—	5	Pamir Ehsas, Stefan Mandaric	Reveal
Arzule	W26	AI for B2B Partnerships	Active	San Francisco, CA, USA	2	Jeffrey Lin, Nikhil Reddy	Reveal
Asimov	W26	Internet-scale marketplace for robot training data	Active	San Francisco, CA, USA	3	Lyem Ningthou	Reveal
Aurorin CAD	W26	We help hardware companies ship faster	Active	San Francisco, CA, USA	1	Michael Baron	Reveal
AutoSitu	W26	AI-native workspace for municipal development review	Active	—	2	Xuanshu Lin, George Zhai	Reveal
Autumn AI	W26	Stalk your prospects at scale.	Active	San Francisco, CA, USA	2	Shiv Kampani, Vishnu Sampathkumar	Reveal
Avoice	W26	The AI Workspace For Architects	Active	San Francisco, CA, USA	4	Chawin Asavasaetakul, Chawit Asavasaetakul	Reveal
BeeSafe AI	W26	Stopping Scams Before They Reach Your Customers	Active	San Francisco, CA, USA	3	Ariana Mirian, Daniel Spokoyny, Nikolai Vogler	Reveal
Booko	W26	Dynamic pricing for businesses that sell time slots	Active	San Francisco, CA, USA	2	Will Hall, Arjun Saluja	Reveal
Bubble Lab	W26	Prompt once, automate forever.	Active	—	2	Selina Li, Zach Zhong	Reveal
Burt	W26	Easily fine tune and deploy specialized models	Active	San Francisco, CA, USA	2	Kurt Sharma, Bobby Zhong	Reveal
Button Computer	W26	Button is the wearable AI that can talk.	Active	San Francisco, CA, USA	2	Chris Nolet, Ryan Burgoyne	Reveal
Byteport	W26	Global upload acceleration for 1GB-100TB files.	Active	San Francisco, CA, USA	1	Jayram Palamadai	Reveal
Canary	W26	The first AI QA engineer that understands your codebase	Active	San Francisco, CA, USA	4	Viswesh N G	Reveal
Cardboard	W26	Agentic video editor	Active	San Francisco, CA, USA	2	Saksham Aggarwal, Ishan Sharma	Reveal
Caretta	W26	Realtime AI for Sales Calls	Active	San Francisco, CA, USA	4	Kayra Bahadir, Omar Elamin, Pavlos Markesinis	Reveal
Cascade	W26	Making Autonomous Intelligence Safe & Reliable	Active	San Francisco, CA, USA	2	Adam AlSayyad, Haluk Cem Demirhan	Reveal
Chamber	W26	Autopiloting your AI infrastructure	Active	San Francisco, CA, USA	4	Charles Ding, Andreas Bloomquist, Jason Ong, Shaocheng Wang	Reveal
Chasi	W26	AI Revenue Engine for the Equipment Industry	Active	New York, NY, USA	2	Akash Pavan, Sarman Aulakh	Reveal
Coevolved	W26	Agents for Mortgage Origination	Active	—	2	Alex Li, Athan Zhang	Reveal
Compresr	W26	LLM-native context compression	Active	San Francisco, CA, USA	4	Berke Argin, Kamel Charaf, Oussama Gabouj, Ivan Zakazov	Reveal
Constellation Space	W26	AI for space mission assurance.	Active	Seattle, WA, USA	4	Laith Altarabishi, Raaid Kabir, Kamran Majid, Omeed Tehrani	Reveal
Corelayer	W26	AI on-call engineer that debugs using data	Active	San Francisco, CA, USA	2	Shipra Jha, Mitch Radhuber	Reveal
Corvera	W26	Fully autonomous operations for CPG brands	Active	San Francisco, CA, USA	4	Dirk Breeuwer, Matthew Collins, Christopher Kong	Reveal
Crosslayer Labs	W26	Protect, monitor and defend your Internet presence	Active	San Francisco, CA, USA	3	Henry Birge-Lee, Grace Cimaszewski, Prateek Mittal	Reveal
Crow	W26	Let users control your app through chat	Active	San Francisco, CA, USA	2	Jai Bhatia, Aryan Vij	Reveal
Cumulus Labs	W26	The Optimized GPU Cloud	Active	San Francisco, CA, USA	2	Suryaa Rajinikanth, Veer Shah	Reveal
Didit	W26	All-in-one identity platform for fast human verification.	Active	San Francisco, CA, USA	12	Alberto Rosas, Alejandro Rosas	Reveal
EigenPal	W26	AI Document Workflows for Enterprises	Active	San Francisco, CA, USA	—	Jedrzej Blaszyk, Matej Novak	Reveal
Emdash	W26	Open-source Agentic Development Environment	Active	San Francisco, CA, USA	2	Arne Strickmann, Raban von Spiegel	Reveal
End Close	W26	AI powered reconciliation for high-volume payments companies	Active	San Francisco, CA, USA	2	Sean Bolton, David Newell	Reveal
Fed10	W26	AI agents that replace your policy consultants	Active	San Francisco, CA, USA	3	Armand Iorgulescu, Zayan Islam, Winston Wei	Reveal
FullSeam	W26	FullSeam is an AI employee for finance and accounting teams.	Active	—	3	Aaron Coppa, Thomas Dowling, Geoff Segal	Reveal
FullSeam	W26	FullSeam is an AI employee for finance and accounting teams.	Active	—	3	Aaron Coppa, Thomas Dowling, Geoff Segal	Reveal
General Legal	W26	The AI native law firm for growth stage companies	Active	—	3	J.P. Mohler, Javed Qadruddin, Ryan Walker	Reveal
Haladir	W26	AI-Enabled Mainframe Modernization and Code Translation.	Active	San Francisco, CA, USA	4	Jibran Hutchins, Quan Huynh, Preston Schmittou, Joseph Tso	Reveal
Hex Security	W26	Agentic Offensive Security at Scale	Active	San Francisco, CA, USA	3	Huzaifa Ahmad, Ahmad Khan, Prama Yudhistira	Reveal
IncidentFox	W26	AI SRE agent that triages, coordinates, and fixes production incidents	Active	San Francisco, CA, USA	2	Jimmy Wei, Long Yi	Reveal
Inviscid AI	W26	Real-time Building Simulations to Optimize Energy and Operational…	Active	San Francisco, CA, USA	2	Kabir Jain, Ziming Qiu	Reveal
Ishiki Labs	W26	Building the Future of Multimodal AI	Active	—	2	Robert Xu, Amit Yadav	Reveal
Jinba	W26	Automate any enterprise workflow through chat	Active	San Francisco, CA, USA	4	Shoya Matsumori, Takuya Norisugi	Reveal
Lance	W26	Your Hotel's Best Employees	Active	San Francisco, CA, USA	3	Gavin Brennen, Caleb Chan, Gatik Trivedi	Reveal
Laurence	W26	RL for performance marketing	Active	—	2	Matthew Chen, Leo Gierhake	Reveal
LegalOS	W26	The AI-powered law firm for complex work visas	Active	San Francisco, CA, USA	3	Matthew Asir, Rachel Asir, Claire Jutabha	Reveal
Lexius	W26	AI Crime Detection	Active	San Francisco, CA, USA	3	David Elskamp, Liam Webster	Reveal
Librar Labs	W26	The first and only AI-librarian.	Active	—	4	Jonathan Görtz, Carl-Hugo Jacobsson, Kaan Sirin	Reveal
Lucent	W26	AI that automatically watches your session replays to detect bugs.	Active	San Francisco, CA, USA	2	Alisa Rae	Reveal
Convoy	—	The world's most efficient digital freight network.	Inactive	Seattle, WA, USA	1200	Daniel Lewis, Grant Goodale	Reveal

Batch Distribution

WW26101 WW2599 WW24149 WW23159 WW22161 WW21134

Status Breakdown

Active838 Inactive83 Acquired79

Top Locations

San Francisco415 New York110 London23 Bengaluru14 Toronto13 Seattle11

About YC B2B Companies

Y Combinator has funded 2,174 b2b companies since its founding in 2005. These startups span from early-stage pre-launch to publicly traded companies, making YC one of the most prolific backers of b2b innovation globally.

838 of these companies are currently active. 79 have been acquired. VCBacked tracks verified founder contact information, team sizes, and company status for every YC b2b startup.

Related Industries

Engineering, Product and Design139 Industrials89 Consumer80 Healthcare78 Fintech65 Infrastructure64 Productivity38 Manufacturing and Robotics30

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